application server instance
AS Instance for short. Component of an AS ABAP. An AS ABAP can be implemented using one or more AS Instances, usually instantiated on different host computers. It is also possible, however, for multiple AS Instances of one or more AS ABAPs to be instanced on the same host computer. Each AS Instance uses its work processes to execute ABAP programs. The memory areas of an AS Instance that can be accessed in the ABAP programs are the shared memory, the user memory, the ABAP memory, and the session memory in the internal session.